4020 Aluminum alloy,Aluminum 4020 alloy,E FORU

### **Product Introduction: Aluminum 4020 Alloy** **Overview** Aluminum 4020 Alloy is a high-performance aluminum-silicon casting alloy specifically designed for applications requiring excellent mechanical properties, superior wear resistance, and good corrosion resistance. This heat-treatable alloy is particularly valued in automotive, aerospace, and industrial sectors for its outstanding combination of castability, strength, and durability in demanding service conditions. --- ### **1. Chemical Composition (Typical Weight %)** | Element | Content (%) | |---------|-------------| | **Aluminum (Al)** | Balance | | **Silicon (Si)** | 6.5 - 7.5 | | **Copper (Cu)** | 0.8 - 1.3 | | **Magnesium (Mg)** | 0.20 - 0.40 | | **Iron (Fe)** | ≤ 0.20 | | **Manganese (Mn)** | 0.10 - 0.30 | | **Zinc (Zn)** | ≤ 0.10 | | **Titanium (Ti)** | 0.08 - 0.18 | | **Strontium (Sr)** | 0.008 - 0.020 | | **Others (Each)** | ≤ 0.05 | | **Others (Total)** | ≤ 0.15 | --- ### **2. Physical Properties** | Property | Value / Description | |----------|---------------------| | **Density** | 2.70 g/cm³ | | **Melting Range** | 555 - 615 °C | | **Electrical Conductivity** | 36-41% IACS | | **Thermal Conductivity** | 145-160 W/m·K | | **Coefficient of Thermal Expansion** | 21.8 × 10⁻⁶/°C | | **Modulus of Elasticity** | 72 GPa | | **Specific Heat Capacity** | 0.90 J/g·°C | --- ### **3. Mechanical Properties (by Temper Condition)** | Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | |--------|------------------------|----------------------|----------------| | **F (As-cast)** | 170-210 | 110-150 | 2-4 | | **T5** | 230-270 | 180-220 | 3-6 | | **T6** | 290-330 | 240-280 | 4-8 | | **T7** | 260-300 | 220-260 | 5-10 | --- ### **4. International Standards** | Standard Body | Designation | |---------------|-------------| | **Aluminum Association (AA)** | AA 4020 | | **European Standard (EN)** | EN AW-4020 | | **ISO** | AlSi7Cu1Mg | | **UNS** | A94020 | | **JIS H** | A4020 | --- ### **5. Product Applications** **Automotive Industry:** - Engine blocks and cylinder heads - Transmission cases - Suspension components - Brake system parts - Engine mounting brackets **Aerospace Applications:** - Aircraft structural brackets - Landing gear components - Engine mounting parts - Missile components - Satellite structures **Industrial Applications:** - High-pressure pump bodies - Valve bodies and housings - Compressor components - Machine tool parts - Robotics components **Marine Applications:** - Marine engine components - Ship fitting parts - Offshore platform components - Marine pump housings --- ### **6. Key Characteristics & Advantages** - **Excellent Castability**: Superior fluidity with minimal shrinkage defects - **High Strength-to-Weight Ratio**: Outstanding mechanical properties with low density - **Good Corrosion Resistance**: Suitable for various environmental conditions - **Excellent Heat Treatability**: Responsive to solution treatment and aging processes - **Good Machinability**: Performs well in machining operations after heat treatment - **Excellent Fatigue Resistance**: Superior performance under cyclic loading conditions - **Good Pressure Tightness**: Excellent for pressure-containing applications --- ### **7. Special Features** **Enhanced Metallurgical Properties:** - Fine eutectic silicon structure due to strontium modification - Reduced porosity in properly cast components - Stable intermetallic phases - Consistent microstructure throughout casting **Manufacturing Advantages:** - Suitable for sand casting and permanent mold processes - Good dimensional stability during heat treatment - Predictable shrinkage characteristics - Excellent surface finish in as-cast condition - Good weldability for repair purposes --- ### **8. Quality and Performance Standards** - Meets automotive and aerospace quality requirements - Suitable for high-integrity structural applications - Consistent batch-to-batch properties - Good impact resistance at room temperature - Reliable performance in dynamic loading conditions **Disclaimer:** The information provided is for reference purposes only. Specific properties may vary depending on casting methods, section thickness, heat treatment parameters, and foundry practices. For critical applications, consult technical data sheets from material suppliers and conduct appropriate testing. Mechanical properties are particularly dependent on solidification rates, modification treatments, and precise control of heat treatment processes.

Packing of Standard Packing: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1744 gallon liquid totes Special package is available on request.